Comparison

Carbonio Files vs Nitro PDF Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Carbonio Files

Read full description

Files is a corporate file manager app for the users of Carbonio and Carbonio Community Edition by Zextras. Zextras Files allows you to access your files and folders on Carbonio and Carbonio CE anywhere, anytime. Synchronize, manage and share with your colleagues any documents safely. Thanks to the Files app, you can: • Securely access any file or folder held into your Files from your smartphone • Move, copy, and delete files or folders • Upload new files • Edit file’s metadata (name, description) • Access shared files and folder • Manage the trash • Manage links for sharing files and folders • UI support for tablets • Preview of documental and multimedia files directly into the app Zextras Files app allows you to share anything using your device easily: you can upload content and share files with colleagues through a secure and trusted channel. Access your camera, upload pics, and videos straight into your app, share any files, and manage the share with other users, defining access rights and visibility. Files authentication is fast and sharable with the Chats app: if you’re using a device where the Zextras Chats app is already installed you are asked if you’d like to use the same credentials.

About

Nitro PDF Pro

Edit, annotate, and secure PDF documents on the go. This app offers powerful tools for professionals to manage PDFs, including mobile scanning and AI-powered data extraction. Seamlessly integrate with cloud services and use styluses for precise markups.

Highlights
  • Edit and annotate PDFs with precision tools
  • Organize pages, merge, and extract PDFs
  • Mobile scanning with OCR for searchable PDFs
  • Secure documents with password protection
  • AI-powered data extraction from tables
  • Seamless integration with cloud storage
Features
Read full description

Nitro PDF Pro is the modern PDF solution with everything you need to edit, annotate, manage, and secure documents on the go. Built for professionals who need powerful PDF tools anywhere, anytime. Create, edit, and manage PDFs seamlessly across iPhone and iPad. Nitro PDF Pro integrates with Apple's Files app and your favorite cloud services—iCloud Drive, OneDrive, Box, Dropbox, Google Drive and more—so your documents are always within reach. Work with Apple Pencil or Bluetooth styluses for freehand drawing, writing, and annotating, and use mobile scanning to turn receipts and documents into PDFs. GET MORE DONE WITH NITRO'S POWERFUL PDF FEATURES EDIT AND ANNOTATE Highlight, underline, draw, add text, and leave comments on any PDF with precision tools designed for touch and Apple Pencil. • Edit text and images with full-page paragraph reflow • Add sticky notes, text edits, and freehand drawings • Highlight and underline key passages • Mark documents with stamps such as Approved or Draft PAGE MANAGEMENT Organize your documents your way. • Add, delete, reorder, and rotate pages • Extract specific pages into a new document • Merge multiple PDFs and documents into a single file MOBILE SCANNING Turn paper into searchable PDFs instantly. • Scan documents, receipts, and business cards directly on your device • Automatic edge detection and perspective correction • Turn scanned documents into searchable, editable PDFs with OCR • Batch scan multiple pages in one session SECURE AND PROTECT Keep every document, and everything inside it, safe with password protection, encryption, and permission controls. • Password-protect files and restrict copying or editing • Permanently redact sensitive information AI-POWERED PRODUCTIVITY Get AI tools built for privacy and control, so you can boost productivity without compromising security. • Automatically extract structured data from tables and forms SEAMLESS INTEGRATION Work where you work, with the tools you trust. • Open PDFs directly from the Files app, OneDrive, and SharePoint • Share via AirDrop, Mail, or third-party apps • Access your documents across iPad and iPhone with iCloud sync Try Nitro PDF Pro for free with a 14-day trial and see why it's the PDF editor for professionals who need to create, edit, and collaborate on PDFs with confidence—from the office to anywhere. Questions about Nitro PDF Pro? User Guides give you step-by-step instructions for editing, annotating, scanning, securing, and managing documents. Get instant support via our in-app Knowledge Assistant or connect directly with our expert team.

Screenshots

Carbonio Files4 screens
Nitro PDF Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: Carbonio Files at none against Nitro PDF Pro's 2. Carbonio Files also leads on iOS requirement (15.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Nitro PDF Pro sells 2 in-app purchases, starting at $19.99 per year. Carbonio Files asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 27, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 8 level
Carbonio Files versus Nitro PDF Pro: the parameters behind the verdict, then further details
ParameterCarbonio FilesNitro PDF Pro
PriceFreeFree
Rating—3.9 (161 ratings) — better
Positive reviews—12.3% of reviews
Number of ratings—161 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.0
Further details — not scored
Size33 MB63 MB
Age rating4+4+
DeveloperZextrasNitro Software, Inc.

Bugs and requests

Carbonio Files

Not enough reviews yet to summarise bugs or requests.

Nitro PDF Pro

Reported bugs

19 issues
  • Cannot reorder PDF files
  • Crashes when opening PDFs from websites/email
  • Does not save markups or documents
  • Difficulty creating new folders
  • Cannot rotate pages
Show 14 more
  • Cannot markup/draw on PDFs with editing disabled
  • Does not save documents after editing
  • Cannot rotate PDFs
  • Program freezes up
  • Fails to save after deleting pages
  • App crashes after update
  • Editing is lost prior to crash
  • Crashes every time to edit a PDF
  • Cannot handle deleting pages
  • Crashes when opening fillable PDFs
  • Crashes when typing in fields
  • No Apple Pencil support
  • Stylus link gives 404 error
  • Bugs like suddenly not being able to draw

Requested features

10 requests
  • Keyboard support (Cmd + F for search)
  • Ability to cancel search with Esc
  • OCR and conversion to text documents on tablets
  • User manual for iPad app
  • Support for Apple Pencil
Show 5 more
  • Ability to create table of contents
  • Ability to create fillable forms
  • Ability to rearrange pages
  • Ability to add to library
  • More intuitive interface

In-app purchases

None

Carbonio Files

No in-app purchases

2 purchases

Nitro PDF Pro

Subscriptions1
  • Annual Subscription14 Days trial$19.991 Year
One-time1
  • Nitro PDF Pro for iOS$9.99

Questions

Is Carbonio Files free?
Carbonio Files is free to download, with no in-app purchases.
Is Nitro PDF Pro free?
Nitro PDF Pro is free to download, with in-app purchases available.
Do Carbonio Files or Nitro PDF Pro have ads?
Neither Carbonio Files nor Nitro PDF Pro shows ads.
Which is updated more often, Carbonio Files or Nitro PDF Pro?
Carbonio Files ships an update every 2 months, and Nitro PDF Pro every 2 months. Most recently, Carbonio Files was updated on October 27, 2026 and Nitro PDF Pro on November 3, 2026.

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